This according to the marketing division of AshleyMadison.com, which helps hook up people looking to have affairs.

Phoenix, which apparently had the third-highest proportion of wannabe home-wreckers last year, is numero uno this year, after dethroning Los Angeles.

This ranking is consistent with some other claims the company has released, including Phoenix's high ranking last year, and another claim that Arizona State University alumni make up more than 7 percent of the site's users, according to a survey.